Fire-extinguisher.



0 W m y a M d e t n e a P an 8 GS U '6 N T WX .E DE R F I 5 POM 9 4 6 nN (Application filed Mar. 8, 1899.)

(No Model.)

INVENTOR WITNESSES ig UNlThD STATES PATENT OFFICE.

DABNEY w. DIGGS, on NEW YORK, N. Y.

FlRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 649,657, y 1900-Applicetlon filedlvlarch 8, 1899. Serial No- 708,239- (No model.)

To aZZ 1071 0121, it may concern:

Be it known that I, DABNEY W. DIGGS, a resident of New York, borough ofManhattan, and State of New York, have invented certain new and usefulImprovements in Fire- Extinguishers; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains' tomake and use the same;

My invention relates to an improvement in fire-extinguishers, and moreparticularly to chemicaLrniXing fire-extinguishers, one object of theinvention being to provide a fireextinguisher which will be simple inconstruction, comparatively cheap to manufacture, easy to operate, andmost effectual when in use.

A further object is to so construct a fire extinguisher that it can bereadily charged, discharged, and recharged without injury to any part ofthe apparatus.

With these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, aswill be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in section illustratingmy improveinents, and Figs. 2, 3, and 4 are views of details.

1 represents a cylindrical receptacle adapted to contain alkaline orother liquid and contracted at its upper end and provided with ascrew-threaded opening 2 in its upper contracted end for the receptionof an externally-screw-threaded ring 3. The ring 3 is of sufficientheight to project above and into the receptacle 1 and is providednearits lower end with a peripheral flange 4 to form a seal against thereceptacle and prevent the escape of the liquid therefrom. Theupwardly-projecting screw-threaded ring 3 is adapted to engage internalscrew-threads on a downwardly-projecting peripheral flange 5 of a cap 6.The cap 6 is provided at points around its periphery with suitableprojections or handholds 7 to facilitate turning same to more securelylock the parts together.

The ring 3 is provided at its lower end with an internal annularshoulder 8 to support a ring 9, having upwardly-projecting lugs 10thereon, for a purpose more fully hereinafter explained.Downwardly-projecting arms 11 are secured to the inner face of the ring9 at diametrically-opposite points and are provided at their lower endswith a ring 12, having an inwardly-projecting flange 13 to form a seatfor a bottle 14, preferably of metal, having tin or other non-corrodiblelining so treated as to resist the action of the chemical containedtherein. The arms 14 are provided between their ends with a ring 15 toinsure the retention of the bottle 14 in proper position. The rings 9,12, and 15 and arms 11 constitute a cage for the reception of the bottle14.

The cap 6 is provided centrally with a screw-threaded hole or openingfor the passage of a screw 16, provided on its lower end with a stopper17, having an upwardly-projecting sleeve or collar 18 for the receptionof the end of the screw 16. A collar 19 is screwed on the stopper 17 andhold on its lower face thereof a packing or filling of asbestos mixedwith rubber or treated with parafiin, lead, or other non-corrodiblematerial. The screw 16 is provided on its upper end with a suitablemilled head or knob 20 for turning same to raise and lower the stopper17.

In order to prevent the corrosion of the metal of the cap when the acidor chemical escapes from the bottle, I provide a lead disk 21 in saidcap and a cork or rubber disk 22 above said lead disk, and it will beseen that when the screw is turned to release the acid or chemicalcontained in the bottle the collar or sleeve 18 on the stopper will becrowded against the packing-disk 21, and thus prevent the escape ofliquid through the threaded opening in the cap.

The bottle 14 is provided near its upper end with a peripheral shoulder23, against which a ring 24 of a frame 25 rests. The frame 25 comprisesthe lower ring 24, an upper ring 26, and connecting-arms 27. The ring 26is disposed against the disk 21, and the arms 27 are of suflicientlength to hold the bottle 14 in its normal position when the receptacle1 is turned upside down to release the acid or chemical contained in thebottle. The lugs 10, heretofore referred to, are of sufficient height torest against the disk 2].,

and hence the cage will always be maintained in its proper position.

The operation of my improved apparatus is as follows: When it is desiredto use the extinguisher, it is simply necessary to unscrew the screw 16,which will uncover the bottle 14, and the apparatus is turned upsidedown and the bottle 14 will be held in its proper position by the frame25 to permit the mixing of the two chemicals to form a fireextinguishingcomposition, which is directed on the flames by a suitable hose 28,communicating with an opening in the receptacle 1.

It will be seen thatmy improved appara-- tus can be readily recharged bysimply removing the cap 6, and that no damage is done to any part of theapparatus by use, as is so: common with the extinguishers now employed,

Various slight changes might be resorted to in the general form andarrangement of the several parts described without departing from thespirit and scope of my invention, and hence I would have it understoodthat I do'not wish to limit myself to the precise details set forth, butconsider myself at liberty to make such slight changes and alterationsas fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1-. In a fire-extinguisher, the combination with a receptacle, of a ringprojecting through the end thereof and provided at its screw for saidcover passing through the cap.

2. In a fire-extinguisher, the combination 5 with a receptacle and aring projecting through the end of the receptacle and provided at itslower or inner end with an internal flange, of a cap screwed on saidring, a cage held rigidly by said cap and the internal flange in thefirst-mentioned ring, a metal bottle supported in said cage, means' forpreventing endwise movement of the metal bottle, non-corrodible materialon the-inner face of the cap, a screw passing through the cap, a coverfor the metal bottle at the lower or inner end of the screw and a collaron the screw to pack the opening through which the screw passes when thecover is moved from the botf tle to prevent the escape of the chemical lthrough the cap. 1 In testimony whereof I have signed this 1specification in the presence of two subscribi ing witnesses.

DABNEY \V. DIGGS.

lVitnesses:

B. S. JoHNsoN, O. N. TIOHENOR.

